private function twelfthSearch($twelfth_fields) { $twelfth_range_fields = array('percentage' => ''); $twelfth_range_params = array_intersect_key($twelfth_fields, $twelfth_range_fields); $twelfth_exact_params = array_diff_key($twelfth_fields, $twelfth_range_params); $twelfth = new Acad_Model_Qualification_Twelfth(); $twelfth_matches = $twelfth->search($twelfth_exact_params, $twelfth_range_params); return $twelfth_matches; }